Voice actress Ai Fairouz has put in the gym time with trainer and entertainer Kin’nikun Nakayama to get pumped up since the premiere of the How Heavy Are the Dumbbells You Lift? anime series. The pair have appeared in weekly videos together focusing on different kinds of work outs. The series’ theme songs got Muscle Videos (MV, typically for ‘music video’) starring “muscle idol” and professional wrestler Reika Saiki and bodybuilder Naotaka Yokokawa.